/Engine/Plugins/Runtime/RigVM/Source/RigVMEditor/Public/RigVMEditorModule.h
FStructureEditorUtils::INotifyOnStructChangedInterface, used to respond to changes to user defined structs
virtual void PreChange ( const [UUserDefinedStruct](API\Runtime\Engine\Engine\UUserDefinedStruct) * Changed, [FStructureEditorUtils::EStructureEditorChangeInfo](API\Editor\UnrealEd\Kismet2\FStructureEditorUtils\EStructureEditorChangeInfo) ChangedType )